Photo-stimulated luminescence (PSL) induced in thallium doped RbBr1-x Ix mixed crystals grown under vacuum (x = 0.00, 0.05 and 0.10) by irradiated with ionizing radiation such as γ- ray is studied at room temperature. Photo-stimulated luminescence observed in mixed crystals by Photostimulation at F-band resulted in emission spectra appeared to be broad and slightly shifted towards low energy side with increasing of iodine content of x. The mechanism of PSL is suggested.
